Sheet-metal vessel.



PATBNTED AUG. 21, 1906. w. WEEEE. SHEET METAL VESSEL.

APPLICATION FILED DEG-1- 190B.

irwealor: orye If we?" Jlrruys UNITED sTATEs PATENT OFFICE.

GEORGE W. WEBER, OF NEW YORK, N. Y., ASS IGNOR TO AMERICAN (JAN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

SHEET-METAL VESSEL.

To all whom it may concern.-

Be it known that I, GEORGE W. WEBER, a citizen of the United States, residing in the city of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Sheet-Metal Yessels, of which the following is a specification.

My invention relates to improvements in sheet-metal cans, pails, or other vessels of the kind or class having what is commonly known as a wire to *that is, a" curve or .roll at the upper en of the bodyand which are commonly used for packing and shipping aints, the roll at the upper end of the body eing outwardly turned, so that the mouth or openin will be of the full diameter of the vessel, an the roll serving not only to stiffen and stren then the body of the vessel at its upper en but also affording a smooth surface to wipe the paint-brush upon, and an external shoulder under which the flange of the cover is crimped or turned to lock and hold it in place, thelower edge of the cover-flange being then soldered to the body to effect a tight closure. Heretofore in the practical use of these so-called wire-top or roll-top paint-cans considerable difficult was experienced in forming perfect or ermeticallytight soldered seams between the cover and the body of the vessel, owing to the fact that durin the soldering operation the air containe in the hollow roll at the to of the canbody expands and escapes in ne bubbles through the solder of the joint while it is molten or setting, thus producing pin-holes or leaks, and in addition to this the soldering of the joints is expensive, as the hole or cavity of the roll fills or partially fills with solder, and

. thus requires an unnecessary large amount of solder to form the joint.

The ob'ect of my invention is to provide an improve construction of these wiretop pails or vessels by which these difficulties may be overcome or avoided and the pail manufactured and soldered much more cheaply and perfectly, while at the same time retainin the external roll on the body of the vessel, t e mouth of full diameter, and the other essential features of paint pails o'r vessels of this class.

My invention consists in the means I employ to practically accomplish this object or resultthat is to sa it consists in providin the body of the pa' or vessel at its top witfi Specification of Letters] Patent.

Application filed December 1, 1906. Serial No. 289.918.

Patented Aug. 21, 1906.

an offset e ualing in extent the diameter of the so-call wire top or,roll to be formed at the top of the vessel and then providin this offset portion with an inwardly-curve roll,

the inner wall of which is flush with the body of the vessel, and combining therewith a cover having an inner annular flange or wall which fits inside the can-body and the roll at the upper end thereof and an outer annular flange or wall, the lower edge of which is crimpcd or turned under the roll at the upper end of the can-body and soldered thereto at its lower edge. By this improved construction the solder is unable to enter the cavity of the hollow roll on the body of the vessel, as the slot at the edge of the curved flange of the roll is upon the inside of the vessel instead of upon the outside thereof, as in the old construction. As in my im roved construction the solder cannot enter t e cavity of the roll I am enabled to solder very cheaply with au tomatic machinery and with a great saving of solder. a

My invention also consists in the novel devices and in the novel combinations of parts and devices herein shown and specified in the claims.

In the accompanying drawings, forming a part of this specification, Figure 1 is a central vertical sectional view of a so-called wiretop orroll-top aint pail or vessel embodying my invention. ig. 21s a top or plan view and Fig. 3 is a detail view showing a slightlymodified construction.

In the drawings, A represents the body of a paint pail or vessel, B the to or cover, and C the bottom or lower head, t 1e latter being preferably secured to the body by a double seam a. The body A of the vessel has at its upper end an offset portion a, forming an external shoulder a and inwardly curved into a roll or, preferably of substantially circular form in cross-section, the inner wall a. of the roll being flush with the inner surface a. of the body of the vessel, and thus constituting an upward extension thereof. The extreme edge a of the curved or rolled offset portion is thus upon the inside of the vessel, and the onl entrance to the cavity of the hollow roll is tl ius u on the inside of the vessel along the annular ine where the edge or flange a meets the main wall of the vessel.

The to or cover B of the vessel has an inner annu ar wall B snugly fitting within the mouth ofthe vessel and engaging the inner annular wall a of the annular roll a and also an outer annular flange or wall I), the lower portion b of which is turned or crimped under the external shoulder a, formed on the body of the vessel by the annular roll a at the up or end thereof. The dotted lines in Fi l s low at b the form of the annular wall I) efore its lower portion b is turned or crimped under and against the external annular roll a of the body of the vessel. The upper intermediate portion b of the coverfiange uniting the inner upwardlyrojecting flan e b and the outer downward y-extending ange b is curved to correspond to and fit the upper portion of the canody roll a The cover B thus has an annular roll conforming to and fitting and surrounding and embracin the annular roll at the upper end of the b0 y of the vessel, the two annu ar rolls thus ooactin with each other to stiffen and strengthen t e u per end of the vessel and prevent any ten ency to spring inward or oolla se when it is lifted by the bailD, however ieavy may be the paint or material the vessel contains. This prevents all danger of breaking the solder joint b", which unites the extreme inner and lower edge I) of the coverflange with the body of the vessel at the lower portion of the roll (1 As the opening a into the cavity of the roll at the extreme edge a thereof is upon the inside of the vessel, the solder cannot enter the cavity of the roll in the soldering operation, so that the solderin may be done with a very small amount of so der and so that the expansion of the air in the cavity of the roll by the heat of the soldaring operation cannot cause bubbles of air to be forced through the solder of the joint while it is molten, artially molten, or setting, and thus cause leafis or defects in the soldered into-nu.

joint, and as the soldered joint I) is upon the outside of the vessel and at the base or lower ortion of the roll a the construction is such that the solderin may be conveniently done by automatic so dering-machines very rapidl and cheaply.

n the modification illustrated in Fig. 3 the external shoulder a. on the body of the vessel at the offset portion thereof is upwardly inclined instead of substantially at right angles, as in Fig. 1. This form I nd more convenient for soldering upon automatic soldering-machines having rotary cylindrical wipers, as the angle between the shoulder of and the body of the vessel being not so sharp affords better access to the wiper.

I claim- 1. In a wire-top sheet-metal pail or vessel, the combination with a sheet-metal body having an externally-oilset portion at its u per end curved inwardly into an annular ro l, of a sheet-metal cover therefor fitting within said annular roll at the u per end of said body, and provided with a ange curved into an annular roll, fitting and embracing said annular roll on said body, and furnished with a soldered joint uniting its lower edge to the body of the vessel, substantially as specified.

2. In a sheet-metal vessel, the combina tion with a body having an external annular roll at its upper end, of a cover fitting within said wall and having inner and outer annular flan es, the outer flange being turned or crimpe at its lower portion under said ex ternal roll on the body and united thereto by a soldered joint, substantially as specified.

GEORGE W. WEBER.

Witnesses:

L. A. WELLES, W. P. PALMER. 

